Data logger



FIG. 1 is a front top perspective view of a data logger showing our new design;

FIG. 2 is a rear top perspective view thereof;

FIG. 3 is a front bottom perspective view thereof;

FIG. 4 is a rear bottom perspective view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left elevational view thereof;

FIG. 8 is a right elevational view thereof;

FIG. 9 is a front elevational view thereof; and,

FIG. 10 is a rear elevational view thereof.

The broken lines shown in the drawings depicting protrusions, recesses and other features illustrate environment that forms no part of the claimed design. 

CLAIM The ornamental design for a data logger, as shown and described. 